Process in the production of carbid.



of Illinois,

IO It is well'knownthat carbid employed in produce carbid in'a protected condition and the carbida thin sheet or coating 0 a pro- 2 5 tccting substance or material. Many d1fler coal-tar, glucose, and the like suitable for this 39 urpose, and l prefer. to mix therewith a carprotecting sheathing or coating may be ap ient manner. ln practice I have founditf like to the surface ofmolds, reservoirs, or

40-elscwhere, and usually in agheat e't'fo'r"fluid jeondition. l have also found it advanta receptzmlcs, reservoirs, or the like and also to heat the molds prev ous to the-introduction of the melted carbl'd. "The lmely divided '50 receptacle, or r(. .servoir. The tar, glucose, Q1"

Paras T" .orr os.

so, inLiuoisy-Ass ouoir sr M'ESNE (J'lRO (.HEMICAL' & DEVELOPMEN (JOMPA NY, ()F' PIER-RE, sou'ru DAKOTA, 'A'co'RroRA'rIon oF-sou'ru I)Al ()lAi PROCESS IN THE PRODUCTION OF CARBID.

. To all whom/zit may concern:

Be it known that .l, HERMAN L. I'IARTEN- STEIN, a citizen of the United States, residing at Chicago, in the county of Cook and State have invented a new and useful Process in the Prod notion of Canbid, of which. the following is a specification.

This invention relates to the process in the production of cal-bid.

the manufacture of acetylene gas is exceed mgly' hygroscopic, possesslng great afhnlty for moisture and readily absorbing the moisuture content of the. air when exposed thereto. I 5 By reason :of tlus hygroscopic quality loss and deterioration is involved in the breaking up, crushing, packing, shipping, storing, and handling of the product. I 7

It is among the objects of my invention to whereby it is protected from cont-actor ex'- posure to moisture of the air. 7

1n carrying out my'mvention I a ply to ent substances .or materials maybe employed for this thin protectmg sheathing or coating. In practice I have found such materials as onaceous material such, for instance, as coke reduced to a finely-divided state. The

plied to the carbid ingany suitable or conve'n-.

convenient to apply the tar, glucose, or the other receptacles into which the carbid isde livered from the electric or other lu'rnaoe or cons to apply the tar, glucose, or the like in eated condition to the surfaces of the molds,

carbonaceous material, as coke, 'm'ay be mixed with the tar,.glucose, or the like or sprinkled over thetarred surface of the mold,-

the. like sinters or scales over the surfaee'of the hot mold or other receptacle, thereby notonly forming a protection for the surfac'e'of the mold or reeeptiwle', but also when the Specification of Letters Patent. Application filed July Z3 19O 2, Renewed September 30, 1905. Serial No. 280,726.

Patented May 1 ,1906.

' molten mass of carbid is delivered therein forming a thin coating or sheathing for-the".

ingot or brick ofcarbid and which protects the same against absorption of moisture from the air. ing thin and impervious -to water or moisture doesnot interfere nuiterially with the production of gas in the subsequent commercial use of the 'carbid, nor does it vary the quality of the illumination produced by the'generated gas.

ture of my invention and the manner of carrying the same into practical operation, what I clann as new and useful and of my own invention, and desire to secure byLetters Patent,is

1. In the production of car-bid which consists in applying to the interiorsurface of a suitable mold a material impervious to water, and then flowing the molten'carbid in fluid state directly from the furnace into such mold, whereby-the carbid is uniformly coated and impregnated superficially with the said material while fluid an d. in a state of incandescence, as and for the purpose ,set forth. 2. In the production of carbid, the method which consists in applying to the interior surface of a suitable'mold a preparation of tar, and then flowing the molten carbid in fluid state directly from the furnace into such mold, whereby the carbid is uniformly coated and superficially impregnated with the tar while fluid and in astate of incandescenee, as and for the pu'rpose'set forth. In the production of-carbid, the method- This sheathing or coating be- Having now set forth the object and na the method which. consists in applyingto the interior surface of a suitable mold a preparation of tar, then heating such mold and finally flowing the molten carbid ,in fluid state directly from, the furnace into such whereby the carbid is uniformly coatedand superficially impregnated with the tar-while in a state of incandcscence, as-and for, the purpose. set forth,

- 4. In the production of carbid, the method which consists'in applying to the ii1t .-rioi-su1'- face of a suitable mold a con'ibined plastic and pulverulent material impervious to water, and finally flown'lg the molten carbid in fluid state fronrthe furnace directly into such mold, whereby the carbid is uniformly coated superficially impregnated with the" heated mold,

' ioo 6. In the production of carbid, the method which consists in appl 'ng to the interior surface of a suitable mo d a 1preparation of tar and carbonaceous mater'ia and then flowing the molten carbid in fluid state from the furnace directly into such mold, whereby the carbid is uniformly coated and superficially impregnated with the tar while fluid and in a state of incandeseence', as and for the purpose set forth. I

7. The method which consists in coatin the interior surfaces of molds with tar mixed with coke in a flnel divided condition, then heating such mol s and finally delivering carbid in melted and fluid condition into the heated mold, whereby a protecting coating is applied to the surface of the carbid, as and for the purpose set forth,

In witness whereof 'I have hereunto set my hand, this 14th day of July, 1902, in the presence of the subscribing witnesses.

HERMAN L. HARTENSTEIN. Witnesses:

E. C. SEMPLE, S. E. DARBY 

